EC8391 CONTROL SYSTEMS ENGINEERINGL T P C3 0 0 3
OBJECTIVES: To introduce the components and their representation of control systems To learn various methods for analyzing the time response, frequency response and stability of the systems. To learn the various approach for the state variable analysis.
UNIT I SYSTEMS COMPONENTS AND THEIR REPRESENTATION 9 Control System: Terminology and Basic Structure-Feed forward and Feedback control theoryElectrical and Mechanical Transfer Function Models-Block diagram Models-Signal flow graphs models-DC and AC servo Systems-Synchronous -Multivariable control system
UNIT II TIME RESPONSE ANALYSIS 9 Transient response-steady state response-Measures of performance of the standard first order and second order system-effect on an additional zero and an additional pole-steady error constant and system- type number-PID control-Analytical design for PD, PI,PID control systems
UNIT III FREQUENCY RESPONSE AND SYSTEM ANALYSIS 9 Closed loop frequency response-Performance specification in frequency domain-Frequency response of standard second order system- Bode Plot - Polar Plot- Nyquist plots-Design of compensators using Bode plots-Cascade lead compensation-Cascade lag compensation-Cascade lag-lead compensation
UNIT IV CONCEPTS OF STABILITY ANALYSIS 9 Concept of stability-Bounded - Input Bounded - Output stability-Routh stability criterion-Relative stability-Root locus concept-Guidelines for sketching root locus-Nyquist stability criterion.
UNIT V CONTROL SYSTEM ANALYSIS USING STATE VARIABLE METHODS 9 State variable representation-Conversion of state variable models to transfer functions-Conversion of transfer functions to state variable models-Solution of state equations-Concepts of Controllability and Observability-Stability of linear systems-Equivalence between transfer function and state variable representations-State variable analysis of digital control system-Digital control design using state feedback.
OUTCOMES: Upon completion of the course, the student should be able to: Identify the various control system components and their representations. Analyze the various time domain parameters. Analysis the various frequency response plots and its system. Apply the concepts of various system stability criterions. Design various transfer functions of digital control system using state variable models.
1. M.Gopal, ―Control System – Principles and Design‖, Tata McGraw Hill, 4th Edition, 2012.
1. J.Nagrath and M.Gopal, ―Control System Engineering‖, New Age International Publishers, 5 th Edition, 2007.
2. K. Ogata, ‗Modern Control Engineering‘, 5th edition, PHI, 2012.
3. S.K.Bhattacharya, Control System Engineering, 3rd Edition, Pearson, 2013.
4. Benjamin.C.Kuo, ―Automatic control systems‖, Prentice Hall of India, 7th Edition,1995.
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